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首页> 外文期刊>World review of science, technology and sustainable development >Computational fluid dynamics modelling of UR-UVGI lamp effectiveness to promote disinfection of airborne microorganisms
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Computational fluid dynamics modelling of UR-UVGI lamp effectiveness to promote disinfection of airborne microorganisms

机译：UR-UVGI灯对促进空气中微生物消毒的有效性的计算流体动力学建模

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This paper focuses on using computational fluid dynamics (CFD) modelling methods to study the effectiveness of upper-room ultraviolet germicidal irradiation (UR-UVGI) lamps in healthcare facilities. This work develops and uses simplifications for boundary conditions in CFD, while details of UR-UVGI lamps and microorganism characteristics were obtained from existing experimental studies. Three approximation methods were developed to implement the effects of UR-UVGI lamps on microorganism dispersion patterns represented with the Hulerian and the Lagrangian methods in CFD simulations. Then, a non-dimensional parameter, the UR-UVGI effectiveness, was introduced to study the effectiveness of UR-UVGI lamp(s) disinfection process with respect to the combined effect of UR-UVGI lamp(s) and ventilation systems. Although comparisons of results obtained from CID simulations and experimental data show that local microorganism numbers/concentrations depend on boundary condition modelling methods, global variables such as the fraction of remaining microorganisms remain relatively unchanged and in a good agreement with the measured data.
机译：本文着重于使用计算流体动力学（CFD）建模方法来研究医疗保健设施中的上室紫外线杀菌照射（UR-UVGI）灯的有效性。这项工作开发并使用了CFD中边界条件的简化，而UR-UVGI灯和微生物特征的详细信息是从现有的实验研究中获得的。开发了三种近似方法来实现UR-UVGI灯对CFD模拟中以Hulerian和Lagrangian方法表示的微生物扩散模式的影响。然后，引入了无量纲参数UR-UVGI有效性，以研究UR-UVGI灯消毒过程相对于UR-UVGI灯和通风系统的综合效果的有效性。尽管从CID模拟和实验数据获得的结果比较表明，局部微生物数量/浓度取决于边界条件建模方法，但是全局变量（例如剩余微生物的比例）保持相对不变，并且与测量数据非常吻合。

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